Provide a function that converts grpc_call_error values into a string

grpc.def

@@ -86,6 +86,7 @@ EXPORTS
     grpc_header_key_is_legal
     grpc_header_nonbin_value_is_legal
     grpc_is_binary_header
+    grpc_call_error_to_string
     grpc_auth_property_iterator_next
     grpc_auth_context_property_iterator
     grpc_auth_context_peer_identity

include/grpc/grpc.h

@@ -384,6 +384,9 @@ GRPCAPI int grpc_header_nonbin_value_is_legal(const char *value, size_t length);
 /** Check whether a metadata key corresponds to a binary value */
 GRPCAPI int grpc_is_binary_header(const char *key, size_t length);
 
+/** Convert grpc_call_error values to a string */
+GRPCAPI const char *grpc_call_error_to_string(grpc_call_error error);
+
 #ifdef __cplusplus
 }
 #endif

src/core/lib/surface/call.c

@@ -1512,3 +1512,40 @@ grpc_compression_algorithm grpc_call_compression_for_level(
   gpr_mu_unlock(&call->mu);
   return grpc_compression_algorithm_for_level(level, accepted_encodings);
 }
+
+const char *grpc_call_error_to_string(grpc_call_error error) {
+  switch (error) {
+    case GRPC_CALL_ERROR:
+      return "GRPC_CALL_ERROR";
+    case GRPC_CALL_ERROR_ALREADY_ACCEPTED:
+      return "GRPC_CALL_ERROR_ALREADY_ACCEPTED";
+    case GRPC_CALL_ERROR_ALREADY_FINISHED:
+      return "GRPC_CALL_ERROR_ALREADY_FINISHED";
+    case GRPC_CALL_ERROR_ALREADY_INVOKED:
+      return "GRPC_CALL_ERROR_ALREADY_INVOKED";
+    case GRPC_CALL_ERROR_BATCH_TOO_BIG:
+      return "GRPC_CALL_ERROR_BATCH_TOO_BIG";
+    case GRPC_CALL_ERROR_INVALID_FLAGS:
+      return "GRPC_CALL_ERROR_INVALID_FLAGS";
+    case GRPC_CALL_ERROR_INVALID_MESSAGE:
+      return "GRPC_CALL_ERROR_INVALID_MESSAGE";
+    case GRPC_CALL_ERROR_INVALID_METADATA:
+      return "GRPC_CALL_ERROR_INVALID_METADATA";
+    case GRPC_CALL_ERROR_NOT_INVOKED:
+      return "GRPC_CALL_ERROR_NOT_INVOKED";
+    case GRPC_CALL_ERROR_NOT_ON_CLIENT:
+      return "GRPC_CALL_ERROR_NOT_ON_CLIENT";
+    case GRPC_CALL_ERROR_NOT_ON_SERVER:
+      return "GRPC_CALL_ERROR_NOT_ON_SERVER";
+    case GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE:
+      return "GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE";
+    case GRPC_CALL_ERROR_PAYLOAD_TYPE_MISMATCH:
+      return "GRPC_CALL_ERROR_PAYLOAD_TYPE_MISMATCH";
+    case GRPC_CALL_ERROR_TOO_MANY_OPERATIONS:
+      return "GRPC_CALL_ERROR_TOO_MANY_OPERATIONS";
+    case GRPC_CALL_OK:
+      return "GRPC_CALL_OK";
+    default:
+      return "GRPC_CALL_ERROR_UNKNOW";
+  }
+}

src/python/grpcio/grpc/_cython/imports.generated.c

@@ -124,6 +124,7 @@ grpc_tracer_set_enabled_type grpc_tracer_set_enabled_import;
 grpc_header_key_is_legal_type grpc_header_key_is_legal_import;
 grpc_header_nonbin_value_is_legal_type grpc_header_nonbin_value_is_legal_import;
 grpc_is_binary_header_type grpc_is_binary_header_import;
+grpc_call_error_to_string_type grpc_call_error_to_string_import;
 grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
 grpc_auth_context_property_iterator_type grpc_auth_context_property_iterator_import;
 grpc_auth_context_peer_identity_type grpc_auth_context_peer_identity_import;
@@ -390,6 +391,7 @@ void pygrpc_load_imports(HMODULE library) {
   grpc_header_key_is_legal_import = (grpc_header_key_is_legal_type) GetProcAddress(library, "grpc_header_key_is_legal");
   grpc_header_nonbin_value_is_legal_import = (grpc_header_nonbin_value_is_legal_type) GetProcAddress(library, "grpc_header_nonbin_value_is_legal");
   grpc_is_binary_header_import = (grpc_is_binary_header_type) GetProcAddress(library, "grpc_is_binary_header");
+  grpc_call_error_to_string_import = (grpc_call_error_to_string_type) GetProcAddress(library, "grpc_call_error_to_string");
   grpc_auth_property_iterator_next_import = (grpc_auth_property_iterator_next_type) GetProcAddress(library, "grpc_auth_property_iterator_next");
   grpc_auth_context_property_iterator_import = (grpc_auth_context_property_iterator_type) GetProcAddress(library, "grpc_auth_context_property_iterator");
   grpc_auth_context_peer_identity_import = (grpc_auth_context_peer_identity_type) GetProcAddress(library, "grpc_auth_context_peer_identity");

src/python/grpcio/grpc/_cython/imports.generated.h

@@ -322,6 +322,9 @@ extern grpc_header_nonbin_value_is_legal_type grpc_header_nonbin_value_is_legal_
 typedef int(*grpc_is_binary_header_type)(const char *key, size_t length);
 extern grpc_is_binary_header_type grpc_is_binary_header_import;
 #define grpc_is_binary_header grpc_is_binary_header_import
+typedef const char *(*grpc_call_error_to_string_type)(grpc_call_error error);
+extern grpc_call_error_to_string_type grpc_call_error_to_string_import;
+#define grpc_call_error_to_string grpc_call_error_to_string_import
 typedef const grpc_auth_property *(*grpc_auth_property_iterator_next_type)(grpc_auth_property_iterator *it);
 extern grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
 #define grpc_auth_property_iterator_next grpc_auth_property_iterator_next_import

src/ruby/ext/grpc/rb_grpc_imports.generated.c

@@ -124,6 +124,7 @@ grpc_tracer_set_enabled_type grpc_tracer_set_enabled_import;
 grpc_header_key_is_legal_type grpc_header_key_is_legal_import;
 grpc_header_nonbin_value_is_legal_type grpc_header_nonbin_value_is_legal_import;
 grpc_is_binary_header_type grpc_is_binary_header_import;
+grpc_call_error_to_string_type grpc_call_error_to_string_import;
 grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
 grpc_auth_context_property_iterator_type grpc_auth_context_property_iterator_import;
 grpc_auth_context_peer_identity_type grpc_auth_context_peer_identity_import;
@@ -386,6 +387,7 @@ void grpc_rb_load_imports(HMODULE library) {
   grpc_header_key_is_legal_import = (grpc_header_key_is_legal_type) GetProcAddress(library, "grpc_header_key_is_legal");
   grpc_header_nonbin_value_is_legal_import = (grpc_header_nonbin_value_is_legal_type) GetProcAddress(library, "grpc_header_nonbin_value_is_legal");
   grpc_is_binary_header_import = (grpc_is_binary_header_type) GetProcAddress(library, "grpc_is_binary_header");
+  grpc_call_error_to_string_import = (grpc_call_error_to_string_type) GetProcAddress(library, "grpc_call_error_to_string");
   grpc_auth_property_iterator_next_import = (grpc_auth_property_iterator_next_type) GetProcAddress(library, "grpc_auth_property_iterator_next");
   grpc_auth_context_property_iterator_import = (grpc_auth_context_property_iterator_type) GetProcAddress(library, "grpc_auth_context_property_iterator");
   grpc_auth_context_peer_identity_import = (grpc_auth_context_peer_identity_type) GetProcAddress(library, "grpc_auth_context_peer_identity");

src/ruby/ext/grpc/rb_grpc_imports.generated.h

@@ -322,6 +322,9 @@ extern grpc_header_nonbin_value_is_legal_type grpc_header_nonbin_value_is_legal_
 typedef int(*grpc_is_binary_header_type)(const char *key, size_t length);
 extern grpc_is_binary_header_type grpc_is_binary_header_import;
 #define grpc_is_binary_header grpc_is_binary_header_import
+typedef const char *(*grpc_call_error_to_string_type)(grpc_call_error error);
+extern grpc_call_error_to_string_type grpc_call_error_to_string_import;
+#define grpc_call_error_to_string grpc_call_error_to_string_import
 typedef const grpc_auth_property *(*grpc_auth_property_iterator_next_type)(grpc_auth_property_iterator *it);
 extern grpc_auth_property_iterator_next_type grpc_auth_property_iterator_next_import;
 #define grpc_auth_property_iterator_next grpc_auth_property_iterator_next_import